Search found 273 matches

by Andrew (grayhat)
Wed Jun 08, 2022 9:06 am
Forum: Questions & Advice
Topic: The cardioid loop
Replies: 9
Views: 8549

The cardioid loop

Here's an interesting antenna design from "Cross Country Wireless" http://www.crosscountrywireless.net/cardioid_loop_antenna.htm while I didn't (yet) build/test it, the idea is quite interesting and it's basically the same which was used in a past for radiogoniometers, in that case they us...
by Andrew (grayhat)
Wed Jun 08, 2022 6:58 am
Forum: Questions & Advice
Topic: selecting a new receiver
Replies: 18
Views: 43473

Re: selecting a new receiver

If you're looking for a receiver, how about an SDRplay RSPdx? IMO, in terms of value for money, you can't get much better. An SDR such as this would leave lots of monetary wiggle room to get a decent antenna. Well, a (GOOD!) SDR unit may fit the bill, sure, but then there will be a learning curve w...
by Andrew (grayhat)
Tue Jun 07, 2022 8:43 pm
Forum: Questions & Advice
Topic: selecting a new receiver
Replies: 18
Views: 43473

Re: selecting a new receiver

if the JRC is serving you well... why replace it ?

as for the antenna, if you'll have a bit of garden, check this one

http://www.kk5jy.net/LoG/

the HOA folks won't even SEE it :D
by Andrew (grayhat)
Tue Jun 07, 2022 7:19 pm
Forum: Questions & Advice
Topic: What is the best indoor antenna for SWLing?
Replies: 19
Views: 35159

Re: What is the best indoor antenna for SWLing?

an L shaped support hanging outside a window and supporting a loop may be viable, I think, won't it? We're not allowed to hang anything outside. And with my luck, if I tried, it would fall 50 floors to street level and decapitate someone. :lol: ok... but you can still use the old "tape loop&qu...
by Andrew (grayhat)
Tue Jun 07, 2022 6:31 pm
Forum: Questions & Advice
Topic: What is the best indoor antenna for SWLing?
Replies: 19
Views: 35159

Re: What is the best indoor antenna for SWLing?

I live in a highrise Faraday cage and my unit doesn't have a balcony, so SWLing always is a challenge. I've been using The Square, an antenna sold by peanutpaster , for about a year. I prop the antenna against a window and clip its wire to my Eton's whip. Reception is improved significantly. an L s...
by Andrew (grayhat)
Tue Jun 07, 2022 6:08 pm
Forum: Questions & Advice
Topic: GE Superadio III awful with headphones
Replies: 5
Views: 15586

Re: GE Superadio III awful with headphones

According to this thread https://antiqueradios.com/forums//viewtopic.php?f=4&t=56282&start=0 this could be a general problem with them. Alas there is no remedy listed, also not on this site with modifications: http://earmark.net/gesr/sr3.htm High impedance headphones could mitigate the prob...
by Andrew (grayhat)
Tue Jun 07, 2022 3:56 pm
Forum: Questions & Advice
Topic: Antenna clip cable
Replies: 15
Views: 26255

Re: Antenna clip cable

Like this one that comes with the Sangean reel antenna. A cable with an alligator clip will work, certainly, but this purpose-built cable is nicer, I'd say. Oh, a cable with alligator clips may not be "nice", but it will work, not sure if there are cables with a "nice clip" like...
by Andrew (grayhat)
Tue Jun 07, 2022 3:20 pm
Forum: Questions & Advice
Topic: Antenna clip cable
Replies: 15
Views: 26255

Re: Antenna clip cable

If I understand the question correctly, this is what you want: No, I want just the cable that sits between the radio's whip antenna and the reel antenna. Fine, so what's wrong with that cable which was suggested and which had alligator clips on one side and a plug on the other side ? If that isn't ...
by Andrew (grayhat)
Tue Jun 07, 2022 10:58 am
Forum: Questions & Advice
Topic: A simple preamp and preselector
Replies: 3
Views: 14067

A simple preamp and preselector

This one is for the folks on the forum which feel ok with a soldering iron in their hands, this PDF document from George R. Steber (WB9LVI) http://www.arrl.org/files/file/QEX_Next_Issue/Jan-Feb2018/Steber.pdf shows how to build a varactor tuned preamplifier which can also act, to some extent, as a p...
by Andrew (grayhat)
Tue Jun 07, 2022 10:43 am
Forum: Questions & Advice
Topic: Malachit SDR (CHN clone) + Sony AN-LP1 ampl. loop
Replies: 5
Views: 3991

Re: Malachit SDR (CHN clone) + Sony AN-LP1 ampl. loop

here's an idea for you, you will need the following: some wooden/plastic supports (more later) a spool of insulated wire (zip cord will do too) a 9:1 balun like this one https://www.nooelec.com/store/balun-one-nine-v2-barebones.html a low noise HF preamp like this one https://www.nooelec.com/store/l...